Java Thread Executor Create getExecutorThreadId(final ExecutorService executor)

Description

Returns the thread ID of the background appender thread.

License

Apache License

Parameter

Parameter	Description
executor	runs the appender thread

Return

the thread ID of the background appender thread

Declaration

public static long getExecutorThreadId(final ExecutorService executor) 

Method Source Code

//package com.java2s;
/*//ww w .  jav a 2  s .co m
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements. See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache license, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the license for the specific language governing permissions and
 * limitations under the license.
 */

import java.util.concurrent.Callable;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Future;

public class Main {
    /**
     * Returns the thread ID of the background appender thread. This allows us to detect Logger.log() calls initiated
     * from the appender thread, which may cause deadlock when the RingBuffer is full. (LOG4J2-471)
     * 
     * @param executor runs the appender thread
     * @return the thread ID of the background appender thread
     */
    public static long getExecutorThreadId(final ExecutorService executor) {
        Future<Long> result = executor.submit(new Callable<Long>() {
            @Override
            public Long call() {
                return Thread.currentThread().getId();
            }
        });
        try {
            return result.get();
        } catch (final Exception ex) {
            final String msg = "Could not obtain executor thread Id. "
                    + "Giving up to avoid the risk of application deadlock.";
            throw new IllegalStateException(msg, ex);
        }
    }
}

Related

1. getExecutorService()
2. getExecutorService(int maximumPoolSize, int corePoolSize, long keepAliveTime, final String name, RejectedExecutionHandler rejectionPolicy)
3. getExecutorService(int poolSize)
4. getExecutorService(String usage)
5. getExecutorServiceWithThreadName(final String threadNamePrefix, int threadCount)